The American Revolution should not have worked.
The British had professional soldiers, experienced commanders, better supplies, and the most powerful navy in the world. The Americans had courage, impossible odds, and something else that helped change history: secret communication.
In this special 250th Fourth of July episode of Mr. Fred’s Tech Talks, we travel from Revolutionary War spycraft to the little lock icon on your browser. Mr. Fred explores George Washington’s spy network, the Culper Ring, invisible ink, coded numbers, Caesar ciphers, and how those early ideas connect to the encryption protecting your digital life today.
You will learn what encryption is, why it matters, how plaintext becomes ciphertext, and why digital trust is about more than hiding information. It is also about knowing whether a message is private, authentic, and protected from being changed along the way.
This episode also includes a hands-on Tech Challenge where listeners can create their own Caesar cipher message and experience the basic idea behind secret keys and coded communication.
Want to help your kids understand technology instead of just consume it?
Visit GetMeCoding.com for beginner-friendly coding activities, tech explainers, podcast episodes, and resources that help families and educators raise confident digital creators.
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